Well, has anyone ever figured this out? Anyone who can ID actual part numbers by manufacturer with rims sizes etc to clear the front calipers? Also... would hope the combo would fit on the rear as well for emergency use only (vs being towed to drama land). I see many are using Weld rims with skinnies as drag setup. Is this without modifying the calipers or downsizing them? Any help from those in the "know" appreciated! Looking for reliable DONUT solution as well!